Moray Eels

Mediterranean Moray Eel (Muraena helena)

• Size: Up to 1.5 meters long

• Appearance: Long, snake-like body with mottled brown, yellow, or dark grey skin; no visible pectoral fins; large mouth with sharp teeth

• Habitat: Rocky reefs, crevices, and holes—often seen peeking out from sheltered spots during the day

• Behavior: Nocturnal predators that feed on fish, crustaceans, and octopus. Often mistaken for aggressive due to their open-mouth breathing, but generally shy and non-threatening when left undisturbed.

• Notes: Commonly spotted by divers in Crete. Look closely in rocky areas—you’ll often see just the head and watchful eyes poking out from a hole. Fascinating to observe, but best admired from a respectful distance.

Moray eels are a fascinating and mysterious presence in the waters surrounding Crete, often glimpsed peeking cautiously from rocky crevices or gliding smoothly through the coral reefs. Their long, serpentine bodies and sharp, needle-like teeth give them an unmistakable appearance, but despite their fearsome look, moray eels are generally shy creatures. They prefer to remain hidden during the day, watching quietly from their dens as divers explore nearby. Mostly active at night, these nocturnal predators play a crucial role in maintaining the balance of the marine ecosystem by controlling populations of smaller fish and crustaceans. Encountering a moray eel adds a touch of intrigue and excitement to any underwater adventure, revealing the hidden complexity of Crete’s vibrant reef life.